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DIGItonium · 11-29-2012, 10:24 AM

Some of us discussed building up an engine using a spare or used block. I honestly don't know anything about building engines, but picking engine components is as intriguing as picking computer components. All of this is pretty much overkill, but I'll continue to maintain the OEM block for as long as I can. I don't have time to maintain this thread, but perhaps one can put together a FAQ or something.

Questions:

Should I get 95.5 or 96 mm though I want to keep stock bore diameter after honing the cylinder walls? 95.5
Are valvetrain upgrades necessary? If anything, it'll be nice to be able to have minor headroom for an additional 500 RPM (keeping in mind VVEL limits). This engine might be subjected to some occasional track use (for testing). How about valves and valve seats that can handle boost?
Some components are listed OEM and race type. Race components sounds like a good idea and gives the impression it can handle the abuse, but isn't it designed to be replaced often (e.g., not for daily driving longevity)? I'm wondering about which bearings to use. OEM bearings, but treated.
Assuming the crank is healthy, what additional work is necessary and how do tolerances work with new bearings? Is polishing and knife edging necessary?

Below is a wishlist for an FI supporting build for daily driving and occasional track use (for testing). The goal is to maintain a stock displacement, and this is a fairly basic build to support reasonable amounts of power (550-600 whp max on 91 octane). Consider this a Stage 0 build:
Engine

Wiseco Pistons/Rings 95.5 mm 9.0:1 CR with upgraded wrist pins (WPC Treated; Calico Top Coat)
Wiseco K1 Connecting Rods (WPC Treated)
OEM Rod Bearings (WPC Treated)
OEM Main Bearings (WPC Treated)

Head

ARP VQ37VHR L19 Head Studs
ARP VQ35/37 Main Studs
Cosworth Head Gaskets

Fuel and Ignition

Injector Dynamics ID725
Viton O-Rings
??? Insulators
HKS Racing Iridium Spark Plugs

Other

GTM VR38 Lower Manifold Adapter and Fuel Rails
OEM VR38 Intake Collector and Engine Cover
OEM Gasket Kit
OEM Timing Belt Kit
Ceramic Coated Parts

11-29-2012, 10:24 AM	#1 (permalink)
DIGItonium A True Z Fanatic Join Date: Jan 2009 Location: Kansas Posts: 3,800 Drives: 09 Z34-TT 6MT Rep Power: 42	Engine Build Thread Some of us discussed building up an engine using a spare or used block. I honestly don't know anything about building engines, but picking engine components is as intriguing as picking computer components. All of this is pretty much overkill, but I'll continue to maintain the OEM block for as long as I can. I don't have time to maintain this thread, but perhaps one can put together a FAQ or something. Questions: Should I get 95.5 or 96 mm though I want to keep stock bore diameter after honing the cylinder walls? 95.5 Are valvetrain upgrades necessary? If anything, it'll be nice to be able to have minor headroom for an additional 500 RPM (keeping in mind VVEL limits). This engine might be subjected to some occasional track use (for testing). How about valves and valve seats that can handle boost? Some components are listed OEM and race type. Race components sounds like a good idea and gives the impression it can handle the abuse, but isn't it designed to be replaced often (e.g., not for daily driving longevity)? I'm wondering about which bearings to use. OEM bearings, but treated. Assuming the crank is healthy, what additional work is necessary and how do tolerances work with new bearings? Is polishing and knife edging necessary? Below is a wishlist for an FI supporting build for daily driving and occasional track use (for testing). The goal is to maintain a stock displacement, and this is a fairly basic build to support reasonable amounts of power (550-600 whp max on 91 octane). Consider this a Stage 0 build: Engine Wiseco Pistons/Rings 95.5 mm 9.0:1 CR with upgraded wrist pins (WPC Treated; Calico Top Coat) Wiseco K1 Connecting Rods (WPC Treated) OEM Rod Bearings (WPC Treated) OEM Main Bearings (WPC Treated) Head ARP VQ37VHR L19 Head Studs ARP VQ35/37 Main Studs Cosworth Head Gaskets Fuel and Ignition Injector Dynamics ID725 Viton O-Rings ??? Insulators HKS Racing Iridium Spark Plugs Other GTM VR38 Lower Manifold Adapter and Fuel Rails OEM VR38 Intake Collector and Engine Cover OEM Gasket Kit OEM Timing Belt Kit Ceramic Coated Parts __________________ Last edited by DIGItonium; 12-02-2012 at 11:21 PM.